I'm not exactly sure, but I don't know if warts would burn and itch. Sounds to me like you have a yeast infection... esp with the discharge. What kind of discharge is it?
You have glands inside your vagina and maybe these are irritated from the infection. I noticed some bumps a few weeks ago, thought they were warts, turns out they were irritated glands from not having enough lubrication during sex.
If I were you (I'm not sure how old you are, I'm guessing you can't go to the dr by yourself) - I would tell your mom that you have burning, itching, discharge and that you'd like to go to the gyno to get checked out. If it is a yeast infection she will give you medicine for it. If it turns out to be something else that you don't want your mom to find out about, tell the Dr.
If you are too scared to go to the Dr (which you shouldn't be - you should go anyways if you are sexually active) you can try buying monistat or something like that from the store and trying it.
Have you looked at the bumps? What do they look like?
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..bumps..burning..itching!! 
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